Door-hanger



(No Model.) I F. O. HAMMOND.

DOOR HANGER.

Patentedfeb. 16, 1892.

//v VENTOI? 1 mammal 1-. A TTORNE Y W/ TNE SSE S UNlTE STATES j PATEN O FICE.

FRED O. HAMMOND, OF SPRINGFIELD, VERMON'R' DOOR-HANGER.

SPECIFICATION forming part of Letters Patent No. 469,043, dated February 16,1892.

' Application filed December 31,1890. Serial No. 376,335. No model.)

To all whom it may concern:

Be it known that I, FRED O. HAMMOND, a citizen of the United States, and a resident of Springfield, Vindsor county, and State of Vermont, have inventeda new and useful Improvement in Door-Hangers, of which the following is a description.

Myinvention relates, particularly, to inside overhead hangers adapted to be used on the doors of stables, store-houses, and otherbuildings; and it consists in the improvements hereinafter described, illustrated,and claimed reference being had to the accompanying drawings, forming part of this specification, where- 1n Figure 1 is an elevation'of my invention as applied to one form of door. Fig. 2 is a plan of the same, the wall of the building being shown in section on the line to a: in Fig. 1. Fig. 3 is a cross-sectional view taken on the line y 3 in Fig. -1.-

Like reference-letters indicate like parts in the several views.

In my improved hanger the friction resulting from the use of wheels or sliding bearings is quite done away with by the use of rollerballs rolling onsuitable guideways, and only the friction due to rolling contact is present.

In Fig. 1 mydevice is shown applied to a stable-door. At B is shown the frame-work of the doorway. G is the door, and D the movable hanger carried by the upper end of the door. This movable hanger is preferably made, as shown in the three figures, of a single casting provided with a continuous semitnbular channel or guideway d. The center of the way d should correspond with the center of the door.

Upon the frame of the doorway is carried the fixed casting E, provided with a similar and opposingtubular channel of length preferably equal to one-half the length of travel of the door plus the diameter of the roller-ball to be used. This casting E is placed in such position that when the door is at the middle of its path of travel the center of the casting E corresponds with the center of the casting D and is at such height that when the ball is interposed between the guideways the foot of the door will be at proper position relatively to the fioor. At each end of the fixed hanger rolling out of the guideway.

Near each end of the path of travel and in line with the fixed hanger E is placed asiniilar hanger F, of length preferably equal to one-quarter the travel of the door plus the diameter of the ball to be used and provided with stops ff. The stop f at the end toward hangerE is of a height nearly equal to the diameter of the ball and is provided with the flange g, which serves to insure theproper guidance of the end of the movable hanger-D onto the ball carried in the guideway of hanger F. The end of the hanger F farthest removed from the central hanger E is slightly raised to' prevent the ball from rolling away from the stop ]I The hangers f are placed at such distance from the hanger E-that when the door is at the center of its path of travel both ends of the guideway cl rest upon the balls in the lower ends of the fixed hangers F. r

The halls are shown in the drawings at H, and the door'is at the extreme right-hand limit of its travel, resting against the stop K. In this position it hangs upon the balls in the center and right-hand stationary hangers. At this position also the balls are at the extreme right-hand limit of their travel.

WVhen, however, the door is moved to the left,

'the'two balls will move at half the velocity of the door until the door reaches its middle position. At this point the right-hand ball ,will obviously have reached the stop f in its pathway, while the ball in the central hanger E will be at its center. At this point't-he hanger D passes away from the right-hand ball and onto the ball in the left-hand hanger F, which is then in turn carried by the motion of the door to the extreme outgrlimit of its motion, which it reaches when the door reaches the left-hand limit of its travel. From this it will be seen that the door always hangs upon two of the balls H. I

While I have shown a pathway in each instance of semi-tubular form and of radius somewhat greater than that of the balls,I do not limit myself to pathways of such form, but include by the term. semi-tubular all pathways having bearing-surfaces with suitable side guide.

E are stops 6, which preventthe ball from I am aware that attempts have been made to utilize roller-balls in door-hangers having bearing-surfaces Without any side guidesr Such construction, however, necessitated outside guides for the upper end of the door, and the latter, besides being cumbersome, prevented the ready removal of the door. My invention completely obviates these dif-. ficulties and at the same time does away with the friction attendant thereon and locks the door in position on its track, making it. almost impossible to displace it. Moreover, at the wide-open or shut position the door will hang on tWo balls equidistant from its; center. This balancing of the door greatly tends "to preserve the door from Warpingor otherwise getting outof shape. Havingnow completely described one form of iny'invention and how the same is construotfid and operated, Iclairn as newand def siretosecure by Letters Patent of the United States the following:

1. In combination with a door and door-'2 way, a stationaryhanger of length substan-! tially equal to-on-e-half the travelof thedoor, one or more stationary hangers of length sub.- stantiallyiequal to one-quarter of the. travel ,of the door, roller-balls for the said stationary T hangers, end stops at or near the ends of. are said stationary hangers, and a movable hanger on the said door provided witha continuouscol-operating Way for the said balls, substantially as set forth.

2. In cornbim tion with theother operating parts of a complete doorehanging device, the door and doorway, a stationary casting or hanger provided with a semi-.tubularbearingsurface substantially .equal in length to onehalf the travel of -the,door while in contact with the roller=bal1 in that hanger, a rollerball therefor, and a hanger carried on the said door provided with a continuous bearing-surface for said balls, substantially asset forth.

3. In combination with adoor and doorway, a hanger carried by the door and provided with a continuous bearing-surface and side guides, stationary hangers carried by the'frame of the doorway and provided with opposing bearing-surfaces, side guides, and end stops, roller balls carried in the said stationary hangers, and guides g for the ends of the first-named hanger, placed on one or more of the saidlstationary hangers, substan- .tially as set forth.

n om l ion with a doo a d o way, aeentral hanger proyi-ded with -a .bearing-surface terminating in stops and vof length approximately equal :to one-half of i i the travel of the door, a similar hanger at each side .of the said central hanger and in inetherewi h, of eng h appr x ma yequ t o e qua e o th tra o the d orsd provided wi.tl1 .en,d;stops and a guide g,- .rol,lerballs placed one in reach of the said hangers,

and a .co operaating hanger provided .with an opposing bear-ingrsurface for the said balls and of length substantially equal to the travel of the door, substantially as and for the purposes set forth.

In testimonywhereof I have set my hand this 2ith day of December, 1890.,

' FRED O. HAMMOND. Witnesses:

B. ,F. DANA, ALIoE M. WHEELER. 

